University of Teramo

Archivio della Ricerca - Università degli Studi di Teramo
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    24663 research outputs found

    Application of Raman microspectroscopy for the characterization of microplastics in clam Chamelea gallina

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    Raman microspectroscopy (μRaman) is a technique successfully used for the physicochemical and morphological characterizaton of microplastics (MPs) with dimensions up to 1 μm. For the development of the extracton protocol, evaluations are made on the type of flters to be used, considering diferent parameters such as the time required for the filtraton step, recovery rates obtained on standard materials, readability and cost of filters. The filter type is chosen considering the best compromise between all these parameters. Once the extraction and filtraton steps are set, the next stage of development concerns the reading strategy, another critical aspect that emerges from the study of the scientific literature on the applicaton of μRaman for MPs characterization. Two different strategies using stereomicroscope and μRaman are combined, and the differences are evaluated to establish the most suitable instrumental protocol for an effective characterization and identificaton of MPs. All these aspects have been taken into consideraton in the development of an analytcal protocol for the analysis of MPs in clam Chamelea gallina with μRaman. Acknowledgments: This study is part of the PLASTICVONG research project (2022) and is fnancially supported by the Italian Ministry of Health (IZS AM 07/22 RC

    Portable electrochemical sensor for trace analysis of ciprofloxacin in water and pharmaceutical samples

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    Trace-level monitoring of ciprofloxacin (CPRO) in aquatic environments is essential for managing antibiotic pollution and bacterial resistance. This study presents a cost-effective portable sensor that employs square-wave anodic stripping voltammetry (SWASV) at an unmodified glassy carbon electrode (GCE) operated in acetate buffer. Detailed optimization tests were performed with the aim of finding the best parameters for this purpose. In particular, deposition time and frequency were tested and all the analytical performance were verified. River-water recoveries attained concentrations obtained by HPLC-MS/MS, HPLC-DAD, and UV/Vis methods. On-site measurements agreed with laboratory analyses, validating field applicability. The protocol also quantified a commercial eye-drop formulation demonstrating applicability of system to pharmaceutical excipients. Overall, the SWASV-GCE method provides a robust, low-cost method for rapid in-situ determination of ciprofloxacin in environmental waters and pharmaceutical matrices. Additionally, a green profile evaluation by means of the recent tools was also addressed and discussed

    The Journey of Mango: How the Shipping Systems Affect Fruit Quality, Consumer Acceptance, and Environmental Impact

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    Mango (Mangifera indica L.) is a popular tropical fruit enjoyed worldwide, with Europe being a significant importer of this fruit. Its climacteric nature and short shelf-life pose challenges for maintaining quality, while emissions from transportation threaten the sustainability of the supply chain. This highlights the importance of low-impact logistics in maintaining fruit quality. This study aimed to evaluate the quality of fresh mangoes in Italy by comparing the different shipping systems (air, sea, and road) for seven cultivars sourced from seven countries. Quality assessment included pomological analysis, PTR-ToF-MS for volatile profiling (n = 11 cultivars x 2 years x 3 replicates), and consumer sensory analysis (n = 65 for untrained panellists in 1 year, n = 8 for trained panellists over 2 years). Results indicated that air and truck transport better preserved fruit quality compared to sea freight, primarily due to shorter transit times, which allowed for harvesting at more advanced ripeness stages. The combination of PTR-ToF-MS and PLS-DA effectively differentiated samples based on the method of transport, showcasing its potential as a quick quality monitoring tool. Mangoes transported by air showed significantly higher levels of volatile organic compounds (VOCs), a 29% greater total soluble solids (TSSs) content, and a 44% lower acidity (TA). Sensorial tests indicated that consumers preferred these mangoes. However, air transport resulted in 30 times higher CO2 emissions per kg of fruit compared to sea freight (similar to 642,117 CO(2)e (kg) vs. similar to 19,132 CO(2)e (kg)), highlighting a critical dilemma between sustainability and quality. These findings provide a framework for developing hybrid logistics strategies that strike a balance between preserving quality and environmental responsibility. Additionally, they support the development of European mango cultivation, which can optimise harvest timing, reduce emissions, and enhance fruit quality

    La costruzione sociale attraverso il lavoro sociale: le azioni possibili per il cambiamento sociale

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    Il lavoro sociale è uno degli elementi fondanti delle politiche e delle pra- tiche di rigenerazione della comunità. In questo breve testo, partendo da alcuni presupposti teorici in cui viene ripreso il concetto di mondi vitali, vengono proposti alcuni strumenti per inquadrare il servizio sociale in una prospettiva partecipativa e di empowerment comunitario. Si conclude che l’applicazione delle metodologie partecipative nel lavoro sociale ha un ef- fetto sia nella definizione dell’oggetto stesso del servizio sociale (non più eterodefinito) sia nell’efficacia della rappresentazione del cambiamento

    Il movimento Mee Too in Italia: un censimento delle azioni correttive nel mondo pubblicitario

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    La complessità delle dinamiche sociali, politiche ed economiche che caratterizzano la nostra epoca richiede un’approfondita analisi delle professioni del comunicare e delle loro modalità di realizzazione. Il libro, frutto dello sforzo comune e interdisciplinare di oltre settanta studiosi convenuti nel 2022 all’Università degli Studi di Teramo, offre soluzioni valide in termini scientifici e nell’ottica del trasferimento conoscitivo, offrendo un contributo reale e significativo all’intero settore della comunicazione

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